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From: Andrew Schulman <schulman DOT andrew AT epamail DOT epa DOT gov>
Subject:  Re: [ANNOUNCEMENT] Updated: unison2.13, unison2.17, unison2.27
Date: Fri, 16 Nov 2007 19:20:30 +0000 (UTC)
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>  The man page for alternatives
> (8) does not seem to specify the allowed range for priority values, but using 
> 2017 for unison 2.17 
> and 2027 for unison 2.27 seem to upset it:
> 
> ajm> /usr/sbin/alternatives.exe --display unison
> path to alternate expected in /var/lib/alternatives/unison
> ajm>
> 
> Editing /var/lib/alternatives/unison as follows seems to fix things:
> 
> ajm> cat /var/lib/alternatives/unison
> auto
> /usr/bin/unison
> 
> /usr/bin/unison-2.17
> 17
> /usr/bin/unison-2.27
> 27
> ajm> /usr/sbin/alternatives.exe --display unison
> unison - status is auto.
>  link currently points to /usr/bin/unison-2.27
> /usr/bin/unison-2.17 - priority 17
> /usr/bin/unison-2.27 - priority 27
> Current `best' version is /usr/bin/unison-2.27.
> ajm ~> 

I can't reproduce this problem on my host:

$ alternatives --display unison
unison - status is auto.
 link currently points to /usr/bin/unison-2.27
/usr/bin/unison-2.13 - priority 2013
/usr/bin/unison-2.17 - priority 2017
/usr/bin/unison-2.27 - priority 2027
Current `best' version is /usr/bin/unison-2.27.

$ cat /var/lib/alternatives/unison
auto
/usr/bin/unison

/usr/bin/unison-2.13
2013
/usr/bin/unison-2.17
2017
/usr/bin/unison-2.27
2027

> I also found a mixture of names - the new versions install "unison" symlinks, 
> but the older versions 
> installed "unison.exe" symlinks. Some of this may have been my hand edits to 
> fix things up though. 

I'm not sure.  At this point I recommend that you remove and reinstall all of
the unison alternatives on your host, as follows:

rm /var/lib/alternatives/unison
for f in /etc/postinstall/unison* ; do $f ; done

and see if that clears up the problem.



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